Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection
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Network: AT-88-Z

This page shows DMARC authentication failures originating from the AT-88-Z network. Learn more about this data.

Network Information
Owner:
Amazon
Org ID:
AT-88-Z
Address:
410 Terry Ave N., Seattle, WA 98109
Countries:
AU CA FR DE IN IE GB US
Unique IPs:
59
CIDRs:
13.200.0.0/13, 13.208.0.0/12, 13.224.0.0/12, 13.24.0.0/13, 13.48.0.0/13, 13.32.0.0/12, 13.56.0.0/14, (more)

Analysis

This network has contributed 59 unique IP addresses across 1,545 failed authentication events, accounting for 46,430 messages. Activity spans from March 13, 2024 to April 14, 2026, with peak volume in September 2025 (2,574 events). The top countries by failure volume are United States (93%), Ireland (5%), Canada (2%). The most active source IPs from this network include 35.174.145.124 (15,911 failures), 52.212.19.177 (901 failures), 15.222.110.90 (390 failures). A single IP dominates activity from AT-88-Z (Amazon), suggesting a concentrated or persistent source rather than distributed infrastructure.

Failures Detected from this Network
Showing 151-200 of 1,545 failures, affecting 46,430 messages
Date ▼ Source IP Country Messages
1/16/2026 3.231.237.226 ⚠ US 1
1/16/2026 34.210.15.192 ⚠ US 2
1/16/2026 35.174.145.124 ⚠ US 106
1/16/2026 52.212.19.177 ⚠ IE 6
1/15/2026 15.222.110.90 ⚠ CA 2
1/15/2026 3.132.222.232 ⚠ US 1
1/15/2026 35.174.145.124 ⚠ US 98
1/15/2026 52.11.209.211 ⚠ US 2
1/15/2026 52.89.255.11 ⚠ US 1
1/14/2026 15.222.110.90 ⚠ CA 1
1/14/2026 3.132.108.44 ⚠ US 4
1/14/2026 3.132.222.232 ⚠ US 5
1/14/2026 3.231.237.226 ⚠ US 4
1/14/2026 34.210.15.192 ⚠ US 3
1/14/2026 35.174.145.124 ⚠ US 88
1/14/2026 52.212.19.177 ⚠ IE 1
1/13/2026 18.210.90.90 US 2
1/13/2026 35.174.145.124 ⚠ US 53
1/13/2026 52.212.19.177 ⚠ IE 1
1/10/2026 15.222.110.90 ⚠ CA 6
1/10/2026 35.174.145.124 ⚠ US 28
1/10/2026 52.212.19.177 ⚠ IE 3
1/9/2026 15.222.110.90 ⚠ CA 5
1/9/2026 18.210.90.90 US 3
1/9/2026 3.132.108.44 ⚠ US 2
1/9/2026 3.132.222.232 ⚠ US 1
1/9/2026 3.231.237.226 ⚠ US 1
1/9/2026 35.174.145.124 ⚠ US 103
1/9/2026 52.212.19.177 ⚠ IE 7
1/8/2026 15.222.110.90 ⚠ CA 2
1/8/2026 35.174.145.124 ⚠ US 98
1/8/2026 52.11.209.211 ⚠ US 1
1/8/2026 52.89.255.11 ⚠ US 1
1/7/2026 15.222.110.90 ⚠ CA 1
1/7/2026 3.132.108.44 ⚠ US 1
1/7/2026 3.132.222.232 ⚠ US 3
1/7/2026 3.231.237.226 ⚠ US 5
1/7/2026 34.210.15.192 ⚠ US 3
1/7/2026 34.223.36.101 ⚠ US 1
1/7/2026 35.174.145.124 ⚠ US 94
1/7/2026 3.93.93.217 ⚠ US 1
1/7/2026 3.93.93.219 ⚠ US 1
1/7/2026 52.212.19.177 ⚠ IE 1
1/6/2026 18.210.90.90 US 2
1/6/2026 35.174.145.124 ⚠ US 54
1/6/2026 52.212.19.177 ⚠ IE 1
12/20/2025 3.132.222.232 ⚠ US 1
12/20/2025 35.174.145.124 ⚠ US 53
12/20/2025 52.212.19.177 ⚠ IE 6
12/19/2025 13.42.61.32 ⚠ GB 1
Countries